Fuel-mixing device for internal-combustion motors.



A. A. CRUSIUS. FUEL MIXING DEVICE FOR INTERNAL COMBUSTION MOTORS.

APPLICATION FILED AUG. 18. I915- Patented Jan. 11, 1916.

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ARTHUR A. CRUSIUS, OF NEW YORK, N. Y.

Specification of Letters Patent.

Patented Jan. 11, 1916.

Application filed August 18, 1915. Serial No. f16,100.

and governor for carburetors, the object being to provide a device that can be placed in the intake manifold of an internal combus tion'motor and-which will act to thoroughly mix the fuel and air in its passage from the carbureter to the said motor. My improved deviceisldesigned to break up the liquid fuel and air by causing the said elements to come closely in contact after the mixture has left the mixing chamber of the carbureter. To more completely carry out the object of my invention, 1 provide an auxiliary air inlet,

the admission of air being controlled by the mixer and governor.

My improved mixer and governor is actu ated by the suction of thepistons; hence the higher the speed, the more the said mixer will open.' After a certain speed has been.

I gained, the auxiliary air inlet will be opened,

admitting outside air which will mix with the partly mixed charge in the manifold. My improved mixer will also prevent flame, should the motor back-fire, from getting into the carbureter, as in that event it will act as a check-valve.-

y 1 will now proceed to describe my invention in detail, the essential features of which will be summarized in the appended claims,

reference being had to the accompanying drawing, forming part hereof; wherein- Figure 1 is a sectional View of aportion of an intake manifold and carbureter illustrating my improved mixer and governor applied thereto; Fig. 2 is a rear view of the mixer, the mantle being omitted, and Fig. 3 is a front view thereof. In Fig. 1, a portion of an intake manifold is indicated by 1, a portion of carbureter by 2 and my improved mixer and governor by 3. As herein illustrated, my improved device is arranged to be applied between the flanges 4 and 5 of the manifold and carbureter 1 and 2, respectively, but it may be built into the said intake manifold or carbureter. One of the elements of my improved mixer consists of a support comprising a plate or gasket 6, provi ed with openings 7 and 8 through which the securing bolts for the manifold and carbureter pass. Another element of my improved mixer comprises a yieldable mantle or mixing element 7, preferably consisting of a coil-spring, one end of which is secured to the gasket or plate 6, the other end being secured to a valve 9 slidably mounted in a seat 10 formed in a hub 11 carried by a duct 12 which extends across the opening 13 in the gasket or plate 6. The ports in the duct 12 communicate with the open air by ducts Hand 15 formed in the gasket or plate 6. The duct 12, with its hub 11, is preferably a separate member brazed in, although the structure can be formed in any desirable manner. F oi very high speed, I provide the hub 11 with supplemental ports 16 and 17.

The action of the device is as follows: lVhen the motor is not running, the governor will be positioned, as shown in Fig. 1, with the port 18 in the duct 12 closed by the valve 9 as well as the supplemental ports 16 and 17, the coils of the springer mantle being close together. lrVhen the motor is cranked there might not be enough suction to open or extend the mantle; at any rate, the mixture from-the carbureter will pass between the coils of the spring and by such passage be completely mixed. It makes no difference whether the mantle 7 extends or not, when the motor is started, the effect will be the same. As the speed of the motor increases, the mantle or spring 7 will extend, increasing the distance between the coils, and thereby providing greater space for the passage of the mixture/ When the motor attains high speed, the spring and valve 9, which moves with the spring, will extend enough to cause said valve to uncover the ports 18, thereby admitting air into the manifold to be mixed with the gases therein.-

Theair taken in through the ports 18 will produce a lean mixture of combustible gases,

which at liiglrmotor speed is very saving in fuel. A still further increase of speed will cause the supplemental ports 16 and 17 to open, which will permit a flow of air, mixed or unmixedwith fuel, to flow into the man-- will be noted that the spring 7 is wound substantially hemi-spherical; hence the coils at the point 7 are more closely nested than at the point 7 b and the coils at 7 a will act as a baffle, causing the mixture to pass out through the side wall of the mixer. This change in the direction of flow will cause the air and gasolene to mix completely.

Having now described my invention, what I claim and desire to secure by Letters Patent is:

1. A mixing device for carbureters comprising a support having an opening therethrough, a mixer carried by said support, consisting of an extensible mantle covering the opening in said support, said mantle consisting of a coil spring, the coils thereof being closely wound, a port in' said support, and a valve, actuated by the movement of said mantle, to control the flow of air through said port.

2. In a fuel mixer, a plate arranged for insertion between the flanges of a carbureter and. intake manifold of a gasolene motor, said plate being provided with an opening therethrough and with ports communicating with said manifold, a valve to control the flow of air through said ports, and means operated by the suction of a motor piston to actuate said valve.

3. A fuel mixer consisting of a coil spring wound in substantially hemi-spherical form, some of the convolutions of said spring being nested closer than others.

4. A fuel mixer consisting of a plate arranged for insertion between the flanges of a carburetor and intake manifold of a gasolene motor, said plate having an opening therethrough, ports extending from the outer surface of said plate to the interior of the manifold, a mixer carried by said plate, consisting of an extensible member, and a valve operated by said member'to control the flow of air through said ports.

5. A fuel mixer for internal combustion motors, consisting of a support having an opening therethrough, a duct extending across said opening and provided with ports extending to the outer surface of said support, a lug carried by said duct provided with an opening therethrough to provide a valve-seat communicating With the ports in said duct, a valve in said opening arranged to normally close said ducts, and means to automatically operate said valve to open said ports when the motor attains high speed.

6. A fuel mixer for internal combustion motors, consisting of a support having an opening therethrough, a duct extending across said opening and provided with ports extending to the outer surface of said support, a lug carried by said duct provided with an opening therethrough to provide a said valve to uncover the ports in said duct.

when the motor attains high speed.

7. A fuel mixer for internal combustion motors, consisting of a support having an opening therethrough, a duct extending across said opening and provided with ports extending to the outer surface of said support, a lug carried by said duct provided with an opening theret'nrough to provide a valve-seat automatically with the ports in said duct, a valve in said opening arranged to normally close said ducts,'said lug being provided with supplemental ports communicating with the opening therethrough, said ports being normally covered by said valve but arranged to be uncovered, at high motor speed, after the ports in said duct have been uncovered.

8. A fuel mixer for internal combustion motors, consisting of a support having an opening therethrough, a duct extending across said opening and provided with ports extending to the outer surface of said support, a valve to control the flow of air through said ports, and a movable mixing device connected to said valve arranged to be operated by the suction of the motor, said valve being operated by the movement of said mixing device.

9. In combination with a duct leading to an internal combustion motor, means to introduce air, unmixed with fuel, into said duct, a valve to control the introduction of the air, means to movably support said valve, and means to actuate said valve, operable by the suction of the motor, consisting of a coil spring wound in substantially hemi-sphericalform, some of the convolutions of said spring being nested closer than others.

10. A fuel mixer consisting of a coil spring, some of the convolutio-ns of said spring being nested closer than others, one end of said spring being substantially closed.

11. A fuel mixer consisting of an extensible mantle arranged for actuation by the suction of a motor, said mantle being arranged for the passage of a combustible mixture through the Wall thereof, one end names or this patent may be obtained for five cents each, by addressing the 'tommissioner of Patents,

Washington, D. G. a 

